Inductively coupled sensor and system for use thereof

Abstract

Included are inductively coupled sensors for downhole electric submersible pumps and methods of use. An example inductively coupled sensor comprises an electric submersible pump sensor, at least one receiving coil coupled to the electric submersible pump sensor; wherein the receiving coil is inductively coupled to a three-phase power cable of an electric submersible pump. An example method comprises placing an inductively coupled sensor in a wellbore, conducting current in the three-phase power cable; wherein current in the three-phase power cable induces a voltage in the receiving coil sufficient to power the electric submersible pump sensor, and sensing the operating parameter of the electric submersible pump with the electric submersible pump sensor.

What is claimed is: 
     
       1. An inductively coupled sensor comprising:
 an electric submersible pump sensor, 
 at least one receiving coil coupled to the electric submersible pump sensor; wherein the receiving coil is inductively coupled to a three-phase power cable of an electric submersible pump, wherein the at least one receiving coil is disposed within an interior channel of a channeled cable protector. 
 
     
     
       2. The inductively coupled sensor of  claim 1 , wherein the receiving coil is disposed along at least two segments of tubing in a wellbore. 
     
     
       3. The inductively coupled sensor of  claim 1 , wherein the three-phase power cable comprises three conductors; and wherein the receiving coil is in closer proximity to one conductor than the other two conductors. 
     
     
       4. The inductively coupled sensor of  claim 1 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to the same conductor than the other two conductors. 
     
     
       5. The inductively coupled sensor of  claim 1 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to a different conductor than the other two conductors. 
     
     
       6. The inductively coupled sensor of  claim 1 , wherein the inductively coupled sensor is configured to measure the electric submersible pump's suction pressure, the electric submersible pump's discharge pressure, the electric submersible pump's motor temperature, a downhole wellbore temperature, the electric submersible pump's vibration, or any combination thereof. 
     
     
       7. The inductively coupled sensor of  claim 1 , further comprising a battery. 
     
     
       8. A method of sensing an operating parameter of an electric submersible pump, the method comprising:
 placing an inductively coupled sensor in a wellbore, the inductively coupled sensor comprising:
 an electric submersible pump sensor, 
 at least one receiving coil coupled to the electric submersible pump sensor; wherein the receiving coil is inductively coupled to a three-phase power cable of the electric submersible pump; wherein the at least one receiving coil is disposed within an interior channel of a channeled cable protector; 
 
 conducting current in the three-phase power cable; wherein current in the three-phase power cable induces a voltage in the receiving coil sufficient to power the electric submersible pump sensor; 
 sensing the operating parameter of the electric submersible pump with the electric submersible pump sensor. 
 
     
     
       9. The method of  claim 8 , wherein the receiving coil is disposed along at least two segments of tubing in the wellbore. 
     
     
       10. The method of  claim 8 , wherein the three-phase power cable comprises three conductors; and wherein the receiving coil is in closer proximity to one conductor than the other two conductors. 
     
     
       11. The method of  claim 8 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to the same conductor than the other two conductors. 
     
     
       12. The method of  claim 8 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to a different conductor than the other two conductors. 
     
     
       13. The method of  claim 8 , wherein the operating parameter is the electric submersible pump's suction pressure, the electric submersible pump's discharge pressure, the electric submersible pump's motor temperature, a downhole wellbore temperature, the electric submersible pump's vibration, or any combination thereof. 
     
     
       14. A system for sensing an operating parameter of an electric submersible pump, the system comprising:
 an inductively coupled sensor comprising:
 an electric submersible pump sensor, 
 at least one receiving coil coupled to the electric submersible pump sensor; wherein the receiving coil is inductively coupled to a three-phase power cable of the electric submersible pump; wherein the at least one receiving coil is disposed within an interior channel of a channeled cable protector; 
 
 the three-phase power cable; and 
 the electric submersible pump coupled to the three-phase power cable. 
 
     
     
       15. The system of  claim 14 , wherein the three-phase power cable comprises three conductors; and wherein the receiving coil is in closer proximity to one conductor than the other two conductors. 
     
     
       16. The system of  claim 14 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to the same conductor than the other two conductors. 
     
     
       17. The system of  claim 14 , wherein the three-phase power cable comprises three conductors; wherein the inductively coupled sensor further comprises at least two receiving coils; wherein the two receiving coils are in closer proximity to a different conductor than the other two conductors. 
     
     
       18. The system of  claim 14 , wherein the inductively coupled sensor is configured to measure the electric submersible pump's suction pressure, the electric submersible pump's discharge pressure, the electric submersible pump's motor temperature, a downhole wellbore temperature, the electric submersible pump's vibration, or any combination thereof. 
     
     
       19. The system of  claim 14 , wherein the receiving coil is disposed along at least two segments of tubing in a wellbore. 
     
     
       20. The system of  claim 14 , wherein the inductively coupled sensor further comprises a battery.